How do I date Limoges porcelain from marks?

Dating often occurs by combining the style of the sign with the shape of the object and the way it is decorated. It can be difficult to place a single stamp without any other identifiers. A factory mark tied to a known company timeline provides better traction, especially if the company has published history or collectors have documented changes to the marks. Hand-painted decorators' marks can suggest a studio and an era, but many studios have operated for long periods of time. Look for model numbers, registration marks, or retailer stamps, as these marks can narrow the window. If you can clearly photograph the base and measure the piece, pattern matching and replacement porcelain catalogues can help. For higher value pieces, an appraiser who specializes in French ceramics can confirm the time based on marking fonts and enamel style.